Improvements to Downloader class to allow for more flexibility in usage

lib/downloader.cpp

@@ -35,18 +35,19 @@ namespace HTTP{
   /// Clears all extra/override headers for outgoing requests.
   void Downloader::clearHeaders(){extraHeaders.clear();}
 
-  /// Downloads the given URL into 'H', returns true on success.
-  /// Makes at most 5 attempts, and will wait no longer than 5 seconds without receiving data.
-  bool Downloader::get(const HTTP::URL &link, uint8_t maxRecursiveDepth){
-    if (!link.host.size()){return false;}
+  /// Returns a reference to the internal HTTP class instance.
+  Parser &Downloader::getHTTP(){return H;}
+
+  /// Returns a reference to the internal Socket::Connection class instance.
+  Socket::Connection &Downloader::getSocket(){return S;}
+
+  /// Sends a request for the given URL, does no waiting.
+  void Downloader::doRequest(const HTTP::URL &link){
     if (link.protocol != "http"){
       FAIL_MSG("Protocol not supported: %s", link.protocol.c_str());
-      return false;
+      return;
     }
     INFO_MSG("Retrieving %s", link.getUrl().c_str());
-    unsigned int loop = 6; // max 5 attempts
-
-    while (--loop){// loop while we are unsuccessful
     H.Clean();
     // Reconnect if needed
     if (!S || link.host != connectedHost || link.getPort() != connectedPort){
@@ -73,6 +74,19 @@ namespace HTTP{
     }
     H.SendRequest(S);
     H.Clean();
+  }
+
+  /// Downloads the given URL into 'H', returns true on success.
+  /// Makes at most 5 attempts, and will wait no longer than 5 seconds without receiving data.
+  bool Downloader::get(const HTTP::URL &link, uint8_t maxRecursiveDepth){
+    if (!link.host.size()){return false;}
+    if (link.protocol != "http"){
+      FAIL_MSG("Protocol not supported: %s", link.protocol.c_str());
+      return false;
+    }
+    unsigned int loop = 6; // max 5 attempts
+    while (--loop){// loop while we are unsuccessful
+      doRequest(link);
       uint64_t reqTime = Util::bootSecs();
       while (S && Util::bootSecs() < reqTime + 5){
         // No data? Wait for a second or so.

lib/downloader.h

@@ -6,6 +6,7 @@ namespace HTTP{
   public:
     Downloader(){progressCallback = 0;}
     std::string &data();
+    void doRequest(const HTTP::URL &link);
     bool get(const std::string &link);
     bool get(const HTTP::URL &link, uint8_t maxRecursiveDepth = 6);
     std::string getHeader(const std::string &headerName);
@@ -15,6 +16,8 @@ namespace HTTP{
     bool (*progressCallback)(); ///< Called every time the socket stalls, up to 4X per second.
     void setHeader(const std::string &name, const std::string &val);
     void clearHeaders();
+    Parser &getHTTP();
+    Socket::Connection &getSocket();
 
   private:
     std::map<std::string, std::string> extraHeaders; ///< Holds extra headers to sent with request